1 Soldering fluxes, welding chemicals, brazing preparations, brazing powder, glue.
3 Abrasive preparations, abrasive papers, emery cloth, preparations for cleaning waste pipes, scouring solutions, scouring solutions for soldering, rust removing preparations, penetrating grease.
4 Industrial oils and greases, lubricants; dust absorbing, wetting and binding compositions, candles, wicks, stearine.
6 Pipes of metal, pipe connections of metal, cable linkages of metal (non electric), wall hooks of metal for pipes, soldered and screwed connectors, pipe sleeves of metal, elbows of metal for pipes, valves of metal, plugs of metal, traps of metal, water valves and pipes of metal, drain traps (valves) of metal, rods of metal for soldering, steel wool pads.
7 Electric glue guns, pressure reducers (parts of machines), clack valves (parts of machines).
9 Thermostats, heat regulating apparatus; alarms, pressure indicators, electric clock relays, programmers and time switches, automatic.
11 Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; taps, taps [cocks, spigots] [faucets] for pipes, mixer taps for water pipes, water flushing installations, flushing tanks, taps and mechanisms for flushing installations, steam traps, air valves for steam heating installations, sewage water and air purification installations, adjustment and safety accessories for water or gas apparatus and for water or gas pipes, radiator valves, thermostatic valves; flexible hoses and insulating parts forming part of domestic electrical appliances; fans for the home, water filters, water softeners; electric water heaters; apparatus for refrigerating; installations for heating, cooking, refrigerating, drying, ventilating and water supply purposes.
17 Flexible pipes and tubes, not of metal, gaskets, sealant compounds for joints, pipe muffs not of metal, clack valves of rubber, rubber stoppers, weatherstripping and sealing strips, washers of rubber, junctions, not of metal, for pipes, joint paste, pipe gaskets, plates of asbestos.
19 Non-metallic rigid pipes for building, water-pipes not of metal, water-pipe valves, not of metal or plastic.
20 Valves not of metal, water-pipe valves of plastic, plugs, not of metal.
37 Building construction and repair services; installation and maintenance of water and gas distribution, heating and ventilation apparatus.